In Investment Fables, one of the world’s leading investment researchers runs the number on 13 of today’s most widely touted strategies, objectively answering the questions your broker can’t answer. Has it worked over the long term? Over the short term? If it made sense once, does it still make sense? Are the promised benefits a statistical mirage? Could it work, as one part of your investment strategy? What are the downsides-and how can you mitigate them?